SetIndexedColumnDESC Method

项目
12/15/2008

后续版本的 Microsoft SQL Server 将删除该功能。请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。

The SetIndexedColumnDESC method specifies a column to sort in descending order as part of an index.

语法

object
.SetIndexedColumnDESC(
ColumnName 
,
Descending
)

Parts

object
Expression that evaluates to an object in the Applies To list.

ColumnName
String that specifies the column name.

Descending
Boolean that specifies whether to sort a column in descending order.

Prototype (C/C++)

HRESULT SetIndexedColumnDESC(
SQLDMO_LPCSTR ColumnName, 
BOOL NewValue);

备注

By default, columns in an index are sorted in ascending order. Use the ColumnName parameter to specify a column on which to perform a descending sort. Set the Descending parameter to TRUE to specify that the column must be sorted in descending order. You must call SetIndexedColumnDESC once for each column to be sorted in descending order as part of the index.

Prior to using SetIndexedColumnDESC, use the IndexedColumns property to define the list of columns participating in the index. SetIndexedColumnDESC can only be specified before an index is created and cannot be used on an existing index.

注意：
If an application calls SetIndexedColumnDESC on an instance of SQL Server version 7.0, the constant, SQLDMO_E_SQL80ONLY, and the message "This property or method requires Microsoft SQL Server 2000 or later" are returned.